Suspension mechanism



March20,192,8. I 1,662,856

' J. C. HANNA SUSPENSION MECHANISM v Filed July 10. 192.4 2 Sheets-Sheet 1 March 20, 1928. 1,662,856

J. C. HANNA SUSPENSION MECHANISM Filed July 10. 1924 g Sheets-Sheet 2 Patented Mar. 20, 1928.

UNITED STATES PATENT OFFICE.

JOHN Q'HA'NNA, OF EVANSTON, ILLINOIS, ASSIG-NOR TO HANNA ENGINEERING WORKS, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SUSPENSION MECHANISM.

Application fi led July 10,

This invention relates to suspension mech anism, and has for its object to provide a mechanism to adjustably suspend a funotioning machine, as for example a riveter,

punch or the like, means being provided to permit ready variation of location of the functioning point of a machine. I

This and other objects will be more fully set forth and described in the following specification and shown in the accompany ingfdrawings, in which Fig. 1 is a perspective of a rlveter suspended by my mechanism. I

Fig. 2 is a vertical section through apor tion of the suspension bail and spreader drawn to an enlarged scale, taken along line 2-2 of Fig. 1. V

Fig. 3 is a side elevation of the riveter and mechanism. I

Fig. 4 is a vertical section along the line H of Fig. 3, drawn to an enlarged scale.

Fig. 5 is a similar view along the line 5-5 of Fig. 3. j v I Like numerals refer to like elements throughoutthe drawings, in which 10 designates generally a riveter frame. having a gap lO 'between the jaws 10 and 10. The f usual anvil die 11 is shown as mounted in jaw 10, while a co-a .cting riveting die, not

shown, is reciprocably mounted in the jaw 10", in well known manner.

' The suspension mechanism.

'sists of a bail member generally indicated by the numeral 12, havingthespaced parallel arms 12 and the connecting top inclined portions 12*, which join at an apex 12. A spreader generally indicated by numeral 13 extends between the side arms 12 at the point of portions 12*. This spreader is constructed of a tube 13* having its bore slightly en larged at each end to form thefshoulders 13 An end piece 13 is provided with the reduced shank13 fitting intothe end of the tube 13 and abutting against the shoulder proper con- 13", one of these endpieces being provided juncture with the upper 1924. Serial No. 725,105.

in the side arm 12 and is threaded into a tapped hole in the end piece 13, as shown in Fig. 2. A fastening pin 15 is driven through the shank 13? and the tube 13 to secure each end piece in assembled relation.

A supporting member, generallyindicated by 16, is provided and consistsof a bell crank having the vertically arranged arm 16" and a horizontally arranged arm 16", the former being provided with. the head 16*, which is provided with the elon gated aperture 16; The bell crank is apertured at the apex at 16 and fits over the spreader 13, as'shown in Fig. 1. Extending between the arm 16* and 16 is the tie bar 16 secured to said arm by suitable plates 16* and 16*, which are riveted or otherwise secured to the bell'crank arms and the tie-bar16. The hook 18 of a lifting crane or the like is inserted through the elongated aperture 16 for general support and movement of the suspension mechanism and its load. The end of arm 16 projects outwardly of the plates 16 and is apertured to permit the pivotal attachment of a clevis 19' by means of the pin 19 or the like, see Figs. 1 and 3 or example. Inthis clevis19 is inserted the swivel hook 20, of a chain hoist 20 or the like the lifting chain '21 of which is attached to the bolt 22, which, is in mm secured to the riveter frame insuch wise-as not to interfere with the reach of the riveter The apex 12? of the bail'12 is mounted in the aperture 16, as shownin Fig. 3' for'example. The lower ends of the bail side arms 12 are apertured to accommodate pivot bolts orpins 25, which are secured to the sides of'the riveter frame 10, the axis of this pivotalmounting of the frame'beingon the opposite side of the center of gravity of the ri'veter fromthe. functioning. point, by which I mean the point of function of the operating tools. In the embodiment shown, this would be the pointof riveting. The axis of pivotal move ment of the frame is just sufiiciently off center to'insure a pull upon the supporting chains 21. I

It should be noted that the point of sup port of the hail from the hook 18 and the center of gravity of the machine 10, lie in or other mechanism.

a vertical plane perpendicular to the axis of the pivotal movement, so that the arc of travel of the functioning point lies in a vertical plane, which is desirable for proper functioning.

The suspension mechanism described above is so constructed as to permit pivotal adjustment of the riveter frame to any one of a number of operating positions from a substantially vertical plane to a horizontal plane, or above. The riveter having been properly located with respect to the work upon which it is to operate, vary the position of the functioning point by actuation of the chain hoist to perform a number of riveting operations without variation in the general position of the ing a functioning mechanism, which will require moving of the main supporting hook 18. As a result, the operator is enabled to readily position his riveter for a number of operations without movement of the main supporting frame, or thelike, by which it is relatively diflicult to properly position the riveter.

It willbe obvious that my invention is susceptible of modification. and I do not wish to be restricted to the form shown and described, except as defined in theappended claims. a

What I claim is:

1. A suspension mechanism for support device, comprising a bail member with spaced supportingsides and a transverse spreader extending between said sides, a supportlng member extending outwardly from said spreader and said bail, and variable means connected to said supporting member and to the functioning device for raising or lowering the functioning point of the functioning device.

2. A suspension mechanism comprising a bail member with spaced side arms and a transverse upper portion, means operative- 1y attached to said upper portion to supportsaid bail, a spreader member extending transversely between said side arms, an outwardly extending supporting member from said spreader, and an outwardlyand downwardly extending memberfrom said"upperportion of said bail, and lifting meanscarried by said supporting member. d

s 3. A suspension mechanism comprising a bail having spaced] side arms and a transverse upper portion, a spreaderextending between said side arms and supporting a member having a portion extending between the upper portion( of said bailand said spreader, a second portion projecting outwardly from said spreader, and a third portionconnecting said first. andsecond portions. i Y

4. A suspension mechanism comprising a bail having spaced side arms and a transverse upper portion, a spreader extending between said side arms and supporting member extending between said side arms it is possible to her having a portion extending between the upper portion of said bail and said spreader, a second portion projecting outwardly from said spreader, and a third portion connecting said first and second portions, and lifting means depending from and carried by said supporting member.

5. A suspension mechanism comprising a bail having spaced supporting side arms and a transverse upper portion, a spreader memd an comprising a tube with end members inserted in the ends thereof for contact with the sides of said bail.

6. A suspension mechanism comprising a bail having spaced supporting side arms and a transverse upper portion, a spreader mem ber extending between said side arms and comprising a tube with end members inserted in the ends thereof for contact with the sides of said bail, bolts extending through said bail side arms and into said end members. y

7 In eombination, amachine having a functioning point, a suspension mechanism therefor, comprising a bail having spaced side arms pivotally attached to said machine on the opposite side of its center of gravity from said functioning point, and supporting means associated with said bail, and alifting means carried bers and operatively attached to said machine. 1 j m V 8. In combination, a machine. having a functioning point, a. suspension mechanism therefor, comprising a bail having'spaced side arms pivotally attached to said-machine, a spreader extending between said side arms, said bail being provided with a transverse upper portion, a supporting member-having portions extending from said upper portion of said bail and from. said spreader. outwardly of said bail, a liftingmeans carried by said supporting member and operatively attached to saidmachine u 5 9. Incombination, a machine having a functioning point, a suspension mechanism, comprising a bail having spaced side arms pivotally attached to said machine, and a transverse connecting upper portion suitably supported, aspreader extending between said side arms of said: bail and attached thereto, the supporting member having a by said supporting memportion extending outwardly from the point i A of support of said bail and a second portion extending outwardly from said spreader, and a lifting member carried by said supporting member and operatively attached to said machine.

10. The combinationv with a machine of the riveter ty e of a main horizontal pivotal support or said machine on an axis 7 near but ofi'set substantially horizontally from the center of gravity of said machine;

a supplemental support engaging said machine remote from said main support and remote from and on the opposite side of the center of gravity With respect to said main support; and means connecting said main and supplemental supports and including force transmitting mechanism, for tilting said machine about said main support 

